how to dynamically change the photos in crystal report from vb

i have a table(employee) with three fields(empno,empname,imgpath), where empno contains the employee number(1001), empname contains the employee name(rakesh), and imgpath contains the file path of the photo of that employee(c:\photos\1001.jpg(or 1001.gif,1001.bmp,1001.tiff)).

i want to prepare a report for this table using crystal report, i can place the fields(empno,empname) in the crystal report, but how do i dynamically get the corresponding photo of the employee.

please explain with a sample code including the crystal report.

thanks for your coordination.